Is that a Lion lurking in Apple's invite for a "Back to the Mac" event on October…
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UPDATE! Apple is streaming this event as well, and you can find everything you need to know about watching it live right here.

The most likely announcements are OS X Lion, which theoretically should bring more new features, rather than just speed and architecture improvements in Snow Leopard. Rumors for 10.7 include more iOS-integration and even iOS-like functionality in the OS.

You also have the leaked photos of the MacBook Air, a machine that hasn't been refreshed in so long it looks like a Geocities webpage in comparison to everything else.

The rumors for the Air include a big-time battery, lower price, two sizes and weird storage. Seeing as the Air is the specialty notebook, it makes sense for Apple to do some weird testing on this model.

An intriguing detail from AppleInsider about the new, 11.6-inch MacBook Air that's expected to …
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Another semi-likely thing is the Verizon iPhone, which is rumored to be on the final testing stage before release. This points to either a pre-Christmas launch, or an announcement now for January that will prevent people from buying other phones on Verizon for the holidays.

iLife '11 is pretty much guaranteed, as is some kind of mention of when iOS 4.2 will hit. That makes for a pretty full docket of announcements. As always, our liveblog will be here, so bookmark now to avoid disappointment later. [Live.Gizmodo]